Preparation method of polypyrrole/nickel hydroxide supercapacitor composite electrode material

Abstract

The invention discloses a preparation method of a polypyrrole / nickel hydroxide supercapacitor composite electrode material. The preparation method comprises the steps of adding pyrrole monomer into anaqueous solution with nickel ion concentration being 0.1-2M, performing room-temperature stirring for 2 hours until the pyrrole monomer is completely dissolved to prepare an electrolyte, taking and placing 50mL of electrolyte in an electrolytic tank, configuring a three-electrode system by taking compaction carbon paper or graphene paper as a working electrode and a counter electrode and saturated calomel electrode as a reference electrode, performing cyclic voltammetry scanning on the system between -1V and 1V at a scanning rate being (5-2,000)mV / s for 100-10,000 circles, taking out the working electrode and the counter electrode after reaction is ended, immersing the system with deionized water for whole night to remove ion impurity, and drying for 24 hours under 60 DEG C, thereby obtaining the polypyrrole / nickel hydroxide supercapacitor composite electrode material. The method has the advantages of simple preparation process, environmental-friendliness, reliability, wide raw material source and low cost, is suitable for industrial production, and the obtained electrode material is compatible with high conductivity and high capacitance and is an ideal supercapacitor electrode material.

Description

technical field [0001] The invention relates to a method for preparing polypyrrole / nickel hydroxide supercapacitor composite electrode material by electrochemical deposition, in particular to a preparation method of polypyrrole / nickel hydroxide supercapacitor composite electrode material. Background technique [0002] As a common conductive polymer, polypyrrole is often used in supercapacitors, batteries, sensors and anti-corrosion fields due to its simple preparation, low cost, good environmental stability and unique physical and chemical properties. The great attention of scientific researchers all over the world. In particular, conductive polypyrrole with nanostructure, due to its extremely small particle size, large specific surface area, and extremely fast electron transfer rate, endows nano-conductive polypyrrole materials with many unique properties that traditional bulk materials do not have. [0003] As an electrode material for supercapacitors, nickel hydroxide ha...

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Problems solved by technology

[0004] Although nickel hydroxide has advantages in capacity as a supercapacitor electrode, it generally has a narrow electrochemical window and poor conductivity.

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